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Geologic Map of the San Bernardino 30 x 60 Degree Quadrangle.

Location map of the San Bernardino 30 x 60 Degree Quadrangle Location map of the San Bernardino 30 x 60 Degree Quadrangle.

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clickable quad index map Selected maps available for the San Bernardino 30 x 60 Degree Quadrangle. See the list below.

Geologic Map


Morton, Douglas M. and Miller, Fred K., 2003, Preliminary geologic map and digital database of the San Bernardino 30' x 60' quadrangle, California: U.S. Geological Survey Open-File Report 2003-293, 1 sheet, 190 p. <http://pubs.usgs.gov/of/2003/of03-293/

Morton, Douglas M. and Miller, Fred K., 2006, Geologic map of the San Bernardino and Santa Ana 30' x 60' quadrangles, California, with digital data preparation by Cossette, Pamela M, and Bovard, Kelly R.: U.S. Geological Survey Open-File Report 2006-1217 http://pubs.usgs.gov/of/2006/1217/.


For additional regional information, see Geologic Reports about the San Bernardino 30 x 60 Degree Quadrangle Region.

Below are selected resources about individual 7.5' quadrangles.
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Azusa 7.5' Quadrangle

California Division of Mines and Geology, 1998, Seismic hazard evaluation of the Azusa 7.5-minute quadrangle
, Los Angeles County, California: California Division of Mines and Geology Open-File Report 98-12, scale 1:24,000. Dibblee, T.W., Jr., 1998, Geologic map of the Mt Wilson/Azusa quadrangles, Los Angeles County, California: Dibblee Geological Foundation, Map DF-67 (Ehrenspeck, H.E., ed.), scale 1:24,000.


Butler Peak 7.5' Quadrangle

Digital geologic map data


Miller, F.K., Matti, J.C., and Brown, H.J., 2000, Digital geologic map of the Butler Peak 7.5' quadrangle, San Bernardino County, California: U.S. Geological Survey Open-File Report OF 00-145, scale 1:24,000 http://geopubs.wr.usgs.gov/open-file/of00-145/

Published geologic maps and reports

Dibblee, T.W., Jr., 1960, Preliminary geologic map of the Victorville quadrangle: U.S. Geological Survey, Miscellaneous Field Studies Map MF-229, scale 1:62,500.

Dibblee, T. W., Jr., 1974, Geologic Map of the Lake Arrowhead Quadrangle, San Bernardino County, California: U.S. Geological Survey Open-File Report 74-56, scale 1:62,500 (the Butler Peak 7.5' quadrangle forms the SE quarter of the Lake Arrowhead 15' quadrangle).

Dibblee, T.W., Jr., 1982, Regional geology of the Transverse Ranges Province of southern California, in Fife, D.L., and Minch, J.A., eds., Geology and mineral wealth of the California Transverse Ranges: Santa Ana, Calif., South Coast Geological Society Annual Symposium and Guidebook, no. 10, p. 7-26.

Dibblee, T.W., Jr., 1982, Geology of the San Bernardino Mountains, southern California, in Fife, D.L., and Minch, J.A., eds., Geology and mineral wealth of the California Transverse Ranges: South Coast Geological Society Guidebook no. 10 (Mason Hill volume), p. 148-169.

Miller, F.K., 1987, Reverse-fault system bounding the north side of the San Bernardino Mountains, in Morton, D.M., and Yerkes, R.F., eds., Recent reverse faulting in the Transverse Ranges, California: U.S. Geological Survey Professional Paper 1339, p. 83-95, scale 1:48,000.

MacColl, R.S., 1964, Geochemical and structural studies in batholithic rocks of southern California: Part 1, structural geology of Rattlesnake Mountain pluton: Geological Society of America Bulletin, v. 75, p. 805-822.

Meisling, K.E., 1984, Neotectonics of the north frontal fault system of the San Bernardino Mountains, southern California: Cajon Pass to Lucerne Valley: Pasadena, California Institute of Technology, unpublished Ph.D. dissertation, 394 p.

Meisling, K.E., and Weldon, R.J., 1989, Late Cenozoic tectonics of the northwestern San Bernardino Mountains, southern California: Geological Society of America Bulletin, v. 101, p. 106-128.

Smith, D.K., 1982, Petrology of Mesozoic alkaline and calc-alkaline igneous rocks northwest of Holcomb Valley, San Bernardino County, California: Riverside, University of California, unpublished M.S. thesis, 87 p.

Smith, D.K., 1982, Petrology of Mesozoic alkaline and calc-alkaline igneous rocks northwest of Holcomb Valley, San Bernardino County, California, in Fife, D., and Minch, J.A., eds., Geology and mineral wealth of the California Transverse Ranges: South Coast Geological Society Guidebook no. 10 (Mason Hill volume), p. 321-329.

Weldon, R.J., and Meisling, K.E., 1982, Late Cenozoic tectonics in the western San Bernardino Mountains; Implications for the uplift and offset of the central Transverse Ranges: Geological Society of America Abstracts with Programs, v. 14, no. 4, p. 243-244.



Cucamonga Peak 7.5' Quadrangle


Digital geologic map data

Morton, D.M, and Matti, J.C., 2001, Digital geologic map of the Cucamonga Peak 7.5' quadrangle, San Bernardino County, California: U.S. Geological Survey Open-File Report OF 01-311, scale 1:24,000 http://geopubs.wr.usgs.gov/open-file/of01-311/.


Published geologic reports

Alf, R.M., 1948, A mylonite belt in the southeastern San Gabriel Mountains, California: Geological Society of America Bulletin, v. 69, p. 1101-1120.

Dibblee, T.W., Jr., 1982, Regional geology of the Transverse Ranges Province of southern California, in Fife, D.L., and Minch, J.A., eds., Geology and mineral wealth of the California Transverse Ranges: Santa Ana, Calif., South Coast Geological Society Annual Symposium and Guidebook, no. 10, p. 7-26.

Dibblee, T.W., Jr., 1982, Geology of the San Gabriel Mountains, southern California, in Fife, D.L., and Minch, J.A., eds., Geology and mineral wealth of the California Transverse Ranges: South Coast Geological Society Guidebook no. 10 (Mason Hill volume), p. 131-147.

Evans, J.G., 1982, Mineral resources of the Sheep Mountain Wilderness Study Area and the Cucamonga Wilderness and additions, Los Angeles and San Bernardino Counties, California: U.S. Geological Survey Bulletin 1506, 92 p.

Hsu, K.J., 1955, Granulites and mylonites of the region about Cucamonga and San Antonio Canyons, San Gabriel Mountains, California: University of California Publications in Geological Sciences, v. 30, p. 223-324.

Matti, J.C., Morton, D.M. and Cox, B.F., 1985, Distribution and geologic relations of fault systems in the vicinity of the central Transverse Ranges, southern California: U.S. Geological Survey Open-File Report 85-365, 27 p., scale 1:250,000.

Matti, J.C., Morton, D.M. and Cox, B.F., 1992, The San Andreas fault system in the vicinity of the central Transverse Ranges province, southern California: U.S. Geological Survey Open-File Report 92-354, 40 p., scale 1:250,000.

May, D.J., 1989, Late Cretaceous intra-arc thrusting in southern California: Tectonics, v. 8, p. 1159-1173.

May, D.J., and Walker, N.W., 1989, Late Cretaceous juxtaposition of metamorphic terranes in the southeastern San Gabriel Mountains, California: Geological Society of America Bulletin, v. 101, p. 1246-1267.

Meisling, K.E., and Weldon, R.J., 1989, Late Cenozoic tectonics of the northwestern San Bernardino Mountains, southern California: Geological Society of America Bulletin, v. 101, p. 106-128.

Morton, D.M., 1975, Synopsis of the geology of the eastern San Gabriel Mountains, southern California, in Crowell, J.C., ed., San Andreas fault in southern California: California Division of Mines and Geology Special Report 118, p. 170-176.

Morton, D.M., and Matti, J.C., 1987, The Cucamonga fault zone: Geologic setting and Quaternary history, in Morton, D.M., and Yerkes R.F., eds., Recent reverse faulting in the Transverse Ranges, California: U.S. Geological Survey Professional Paper 1339, p. 179-203.

Morton, D.M., and Matti, J.C., 1991, Geologic map of the Cucamonga Peak 7.5' Quadrangle, California: U.S. Geological Survey Open-File Report 90-694, scale 1:24,000.

Morton, D.M., Rodriguez, E.A., Obi, C.M., Simpson, R.W., Jr., and Peters, T.J., 1983, Mineral resource potential map of the Cucamonga Roadless Areas, San Bernardino County, California: U.S. Geological Survey Miscellaneous Field Studies Map MF-1646-A, scale 1:31,680.

Nourse, J.A., 2002, Middle Miocene reconstruction of the central and eastern San Gabriel Mountains, southern California, with implications for evolution of the San Gabriel Fault and Los Angeles basin, in Barth, A., ed., Contributions to crustal evolution of the southwestern United States: Boulder, Colorado, Geological Society of America Special Paper 365, p. 161-185.


Devore 7.5' Quadrangle

Digital geologic map data

Morton, D.M, and Matti, J.C., 2001, Digital geologic map of the Devore 7.5' quadrangle, San Bernardino County, California: U.S. Geological Survey Open-File Report OF 01-173, scale 1:24,000 http://geopubs.wr.usgs.gov/open-file/of01-173/.

Published geologic reports

Dibblee, T.W., Jr., 1982, Regional geology of the Transverse Ranges Province of southern California, in Fife, D.L., and Minch, J.A., eds., Geology and mineral wealth of the California Transverse Ranges: Santa Ana, Calif., South Coast Geological Society Annual Symposium and Guidebook, no. 10, p. 7-26.

Dibblee, T.W., Jr., 1982, Geology of the San Gabriel Mountains, southern California, in Fife, D.L., and Minch, J.A., eds., Geology and mineral wealth of the California Transverse Ranges: South Coast Geological Society Guidebook no. 10 (Mason Hill volume), p. 131-147.

Evans, J.G., 1982, Mineral resources of the Sheep Mountain Wilderness Study Area and the Cucamonga Wilderness and additions, Los Angeles and San Bernardino Counties, California: U.S. Geological Survey Bulletin 1506, 92 p.

Matti, J.C., Morton, D.M. and Cox, B.F., 1985, Distribution and geologic relations of fault systems in the vicinity of the central Transverse Ranges, southern California: U.S. Geological Survey Open-File Report 85-365, 27 p., scale 1:250,000.

Matti, J.C., Morton, D.M. and Cox, B.F., 1992, The San Andreas fault system in the vicinity of the central Transverse Ranges province, southern California: U.S. Geological Survey Open-File Report 92-354, 40 p., scale 1:250,000.

May, D.J., and Walker, N.W., 1989, Late Cretaceous juxtaposition of metamorphic terranes in the southeastern San Gabriel Mountains, California: Geological Society of America Bulletin, v. 101, p. 1246-1267.

Meisling, K.E., and Weldon, R.J., 1989, Late Cenozoic tectonics of the northwestern San Bernardino Mountains, southern California: Geological Society of America Bulletin, v. 101, p. 106-128.

Morton, D.M., 1975, Synopsis of the geology of the eastern San Gabriel Mountains, southern California, in Crowell, J.C., ed., San Andreas fault in southern California: California Division of Mines and Geology Special Report 118, p. 170-176.

Morton, D.M., and Matti, J.C., 1987, The Cucamonga fault zone: Geologic setting and Quaternary history, in Morton, D.M., and Yerkes R.F., eds., Recent reverse faulting in the Transverse Ranges, California: U.S. Geological Survey Professional Paper 1339, p. 179-203.

Morton, D.M., and Matti, J.C., 1991, Geologic map of the Devore 7.5' Quadrangle, California: U.S. Geological Survey Open-File Report 90-695, scale 1:24,000.

Morton, D.M., Rodriguez, E.A., Obi, C.M., Simpson, R.W., Jr., and Peters, T.J., 1983, Mineral resource potential map of the Cucamonga Roadless Areas, San Bernardino County, California: U.S. Geological Survey Miscellaneous Field Studies Map MF-1646-A, scale 1:31,680.

Nourse, J.A., 2002, Middle Miocene reconstruction of the central and eastern San Gabriel Mountains, southern California, with implications for evolution of the San Gabriel Fault and Los Angeles basin, in Barth, A., ed., Contributions to crustal evolution of the southwestern United States: Boulder, Colorado, Geological Society of America Special Paper 365, p. 161-185.

Weldon, R.J., and Meisling, K.E., 1982, Late Cenozoic tectonics in the western San Bernardino Mountains; Implications for the uplift and offset of the central Transverse Ranges: Geological Society of America Abstracts with Programs, v. 14, no. 4, p. 243-244.

Weldon, R.J., 1986, The late Cenozoic geology of Cajon Pass; implications for tectonics and sedimentation along the San Andreas fault: Pasadena, California Institute of Technology, unpublished Ph.D. thesis, 382 p.


Fifteenmile Valley 7.5' Quadrangle

Digital geologic map data


Miller, F.K., and J.C. Matti, J.C., 2001, Geologic Map of the Fifteenmile Valley 7.5' Quadrangle, San Bernardino County , California: U.S. Geological Survey Open-File Report OF 01-132, scale 1:24,000 http://geopubs.wr.usgs.gov/open-file/of01-132/

Published geologic reports

Bortugno, E.J., and Spittler, T.E., 1986, Geologic map of the San Bernardino quadrangle: California Division of Mines and Geology, Map No.3A (Geology) of the Regional Geologic Map Series, scale 1:250,000.

Dibblee, T.W., Jr., 1960, Preliminary geologic map of the Victorville quadrangle: U.S. Geological Survey, Miscellaneous Field Studies Map MF-229, scale 1:62,500.

Dibblee, T. W., Jr., 1974, Geologic Map of the Lake Arrowhead Quadrangle, San Bernardino County, California: U.S. Geological Survey Open-File Report 74-56, scale 1:62,500 (the Fifteenmile Valley 7.5' quadrangle forms the NE quarter of the Lake Arrowhead 15' quadrangle)

Dibblee, T.W., Jr., 1982, Regional geology of the Transverse Ranges Province of southern California, in Fife, D.L., and Minch, J.A., eds., Geology and mineral wealth of the California Transverse Ranges: Santa Ana, Calif., South Coast Geological Society Annual Symposium and Guidebook, no. 10, p. 7-26.

Dibblee, T.W., Jr., 1982, Geology of the San Bernardino Mountains, southern California, in Fife, D.L., and Minch, J.A., eds., Geology and mineral wealth of the California Transverse Ranges: South Coast Geological Society Guidebook no. 10 (Mason Hill volume), p. 148-169.

Miller, F.K., 1987, Reverse-fault system bounding the north side of the San Bernardino Mountains, in Morton, D.M., and Yerkes, R.F., eds., Recent reverse faulting in the Transverse Ranges, California: U.S. Geological Survey Professional Paper 1339, p. 83-95, scale 1:48,000

MacColl, R.S., 1964, Geochemical and structural studies in batholithic rocks of southern California: Part 1, structural geology of Rattlesnake Mountain pluton: Geological Society of America Bulletin, v. 75, p. 805-822

Meisling, K.E., and Weldon, R.J., 1989, Late Cenozoic tectonics of the northwestern San Bernardino Mountains, southern California: Geological Society of America Bulletin, v. 101, p. 106-128.

Meisling, K.E., 1984, Neotectonics of the north frontal fault system of the San Bernardino Mountains, southern California: Cajon Pass to Lucerne Valley: Pasadena, California Institute of Technology, unpublished Ph.D. dissertation, 394 p.

Rogers, T.H., Compiler, 1967, San Bernardino sheet of Geologic map of California: California Division of Mines and Geology, scale 1:250,000.

Smith, D.K., 1982, Petrology of Mesozoic alkaline and calc-alkaline igneous rocks northwest of Holcomb Valley, San Bernardino County, California, in Fife, D., and Minch, J.A., eds., Geology and mineral wealth of the California Transverse Ranges: South Coast Geological Society Guidebook no. 10 (Mason Hill volume), p. 321-329.

Smith, D.K., 1982, Petrology of Mesozoic alkaline and calc-alkaline igneous rocks northwest of Holcomb Valley, San Bernardino County, California: Riverside, University of California, unpublished M.S. thesis, 87 p.

Weldon, R.J., and Meisling, K.E., 1982, Late Cenozoic tectonics in the western San Bernardino Mountains; Implications for the uplift and offset of the central Transverse Ranges: Geological Society of America Abstracts with Programs, v. 14, no. 4, p. 243-244.


Glendora 7.5' Quadrangle

California Division of Mines and Geology, 1998, Seismic hazard evaluation of the Glendora 7.5-minute quadrangle
, Los Angeles County, California: California Division of Mines and Geology Open-File Report 98-16, scale 1:24,000.


Juniper Hills 7.5' Quadrangle

Barrows, A.G., 1979, Geology and fault activity of the Valyermo segment of the San Andreas fault zone, Los Angeles County, California: California Division of Mines and Geology Open-File Report 79-1LA, 49 p., scale 1:12,000.

Barrows, A.G., 1980, Geologic map of the San Andreas fault zone and adjoining terrane, Juniper Hills and vicinity, Los Angeles County, California: California Division of Mines and Geology Open-File Report 80-2LA, scale 1:9,600.

Barrows, A.G., 1987, Geology of the San Andreas fault zone and adjoining terrane, Juniper Hills and vicinity, Los Angeles County, California, in Hester, R.L., and Hallinger, D.E., eds., San Andreas fault-Cajon Pass to Palmdale: Pacific Section, American Association of Petroleum Geologists, Volume and guidebook no. 59, p. 93-157.


Redlands 7.5' Quadrangle

Digital geologic map data

Matti, J.C., Morton, D.M., Cox, B.F., and Kendrick, K.J., 2003, Geologic map and digital database of the Redlands 7.5' quadrangle, San Bernardino and Riverside Counties, California, Version 1.0: U.S. Geological Survey Open-File Report OF 03-302, scale 1:24,000, 14 p., http://geopubs.wr.usgs.gov/open-file/of03-302/.
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Published geologic reports

Albright, L.B., 1999, Magnetostratigraphy and biochronology of the San Timoteo Badlands, southern California, with implications for local Pliocene-Pleistocene tectonic and depositional patterns: Geological Society of America Bulletin, v. 111, p. 1265-1293.

Albright, L.B., 1997, Geochronology and vertebrate paleontology of the San Timoteo Badlands, southern California: Riverside, University of California, unpublished Ph.D. thesis, 328 p.

Burnham, W.L., and Dutcher, L.C., 1960, Geology and ground-water hydrology of the Redlands-Beaumont area, California, with special reference to ground-water outflow: United States Department of the Interior Geological Survey-Ground Water Branch, Open-File Report, 352 p. [This important report is very difficult to obtain. A good-quality copy is archived with the San Bernardino Valley Municipal Water District, from whom copies can be obtained].

Dibblee, T.W., Jr., 1974, Geologic map of the Redlands 15-minute quadrangle, California: U.S. Geologic Survey Open-File Report 74-1022, scale 1:62,500.

Dutcher, L.C., and Burnham, W.L., 1964, Geology and ground-water hydrology of the Mill Creek area, San Bernardino County, California: U.S. Geological Survey Open-File Report, 226 p. plus figures [revises an earlier report by the authors, released in 1960. The 1964 report is archived with the San Bernardino Valley Municipal Water District, from whom copies can be obtained].

Eckis, R., 1934, South Coastal basin investigation-Geology and ground-water storage capacity of valley fill: California Department of Water Resources Bulletin 45, 273 p.

Frick, C., 1921, Extinct vertebrate faunas of the Badlands of Bautista Creek and San Timoteo Canon, southern California: Berkley, University of California Publications in Geology, v. 12, no. 5, p. 277-424.

Green, S.M., 1983, Seismotectonic study of the San Andreas, Mission Creek, and Banning fault system: Los Angeles, University of California, unpublished M.S. thesis, 52 p.

Jones, L.M., 1988, Focal mechanisms and the state of stress on the San Andreas Fault in southern California: Journal of Geophysical Research, v. 93, no. B8, p. 8869-8891.

Kendrick, K.J., 1996, Descriptions and laboratory analysis for soils in the northern San Timoteo Badlands, California: U.S. Geological Survey Open-File Report 96-93, 6 p.

Kendrick, K.J., 1999, Quaternary geologic evolution of the northern San Jacinto fault zone: Understanding evolving strike-slip faults through geomorphic and soil stratigraphic analysis: Riverside, University of California, unpublished Ph.D. dissertation, 301 p.

Kendrick, K.J., McFadden, L.D., and Morton, D.M., 1994, Soils and slip rates along the northern San Jacinto fault, in McGill, S.F., and Ross, T.M., eds., Geological investigations of an active margin: Geological Society of America Cordilleran Section Guidebook, Trip No. 8, p. 146-151.

Kendrick, K.J., Morton, D.M., Wells, S.G., and Simpson, R.W., 2002, Spatial and temporal deformation along the northern San Jacinto fault, southern California; implications for slip rates: Bulletin of the Seismological Society of America, v. 92, no. 7, pp. 2782-2802.

Matti, J.C., and Morton, D.M., 1975, Geologic history of the San Timoteo Badlands, southern California: Geological Society of America Abstracts with Programs, v. 7, no. 3, p. 344.

Matti, J.C., and Morton, D.M., 1993, Paleogeographic evolution of the San Andreas fault in southern California: a reconstruction based on a new cross-fault correlation, in Powell, R.E., Weldon, R.J., and Matti, J.C., eds., The San Andreas Fault system: displacement, palinspastic reconstruction, and geologic evolution: Geological Society of America Memoir 178, p. 107-159.

Matti, J.C., Morton, D.M. and Cox, B.F., 1985, Distribution and geologic relations of fault systems in the vicinity of the central Transverse Ranges, southern California: U.S. Geological Survey Open-File Report 85-365, 27 p., scale 1:250,000.

Matti, J.C., Morton, D.M. and Cox, B.F., 1992, The San Andreas Fault system in the vicinity of the central Transverse Ranges province, southern California: U.S. Geological Survey Open-File Report 92-354, 40 p., scale 1:250,000.

Morton, D.M., 1978, Geologic map of the Redlands 7.5' quadrangle, California: U.S. Geological Survey Open-File Report 78-21, scale 1:24,000.

Morton, D.M., and Matti, J.C., 1993, Extension and contraction within an evolving divergent strike-slip fault complex: the San Andreas and San Jacinto fault zones at their convergence in southern California, in Powell, R.E., Weldon, R.J., and Matti, J.C., eds., The San Andreas Fault system: displacement, palinspastic reconstruction, and geologic evolution: Geological Society of America Memoir 178, p. 217-230.

Morton, D.M., Sadler, P.M., and Matti, J.C., 1990, Constant watershed growth and fault offset in the San Timoteo Badlands, southern California: Geological Society of America Abstracts with Programs, v. 22, no. 3, p. 70.

Reynolds, R.E., and Reeder, W.A., 1986, Age and fossil assemblages of San Timoteo Formation, Riverside County, California, in Kooser, M.A. and Reynolds, R.E., editors, Geology around the margins of the eastern San Bernardino Mountains: Redlands, California, Publications of the Inland Geological Society, volume 1, p. 51-56.

Reynolds, R.E., and Reeder, W.A., 1991, The San Timoteo Formation, Riverside County, California: Redlands, California, San Bernardino County Museum Quarterly, v. 39, p. 44-48.

Weldon, R. J., and Matti, J. C., 1986, Geologic evidence for segmentation of the southern San Andreas Fault: Transactions of the American Geophysical Union, v. 67, p 905-906.

Willingham, R.C., 1968, A gravity survey of the San Bernardino Valley, southern California: Riverside, University of California, M.S. thesis, 96 p.

Willingham, R.C., 1971, Basement fault geometries in the San Bernardino Valley and western San Gorgonio Pass area, southern California: Geological Society of America Abstracts with Programs, v. 3, no. 2, p. 217.

Willingham, R.C., 1981, Gravity anomaly patterns and fault interpretations in the San Bernardino Valley and western San Gorgonio Pass area, southern California, in Brown, A.R., and Ruff, R.W., eds., Geology of the San Jacinto Mountains: Santa Ana, California, South Coast Geological Society, Annual Field trip guidebook, no. 9, p. 164-174.

Woodruff, G.A., and Brock, W.Z., 1980, Soil survey of San Bernardino County, southwestern part, California: U.S. Department of Agriculture, Soil Conservation Service, 64 p., scale 1:24,000.


San Bernardino North 7.5' Quadrangle

Digital geologic map data

Miller, F.K., and Matti, J.C., 2001, Digital geologic map of the San Bernardino North 7.5' quadrangle, San Bernardino County, California: U.S. Geological Survey Open-File Report OF 01-131, scale 1:24,000 http://geopubs.wr.usgs.gov/open-file/of01-131/.

Published geologic reports

Dibblee, T.W., Jr., 1982, Regional geology of the Transverse Ranges Province of southern California, in Fife, D.L., and Minch, J.A., eds., Geology and mineral wealth of the California Transverse Ranges: Santa Ana, Calif., South Coast Geological Society Annual Symposium and Guidebook, no. 10, p. 7-26.

Dibblee, T.W., Jr., 1982, Geology of the San Bernardino Mountains, southern California, in Fife, D.L., and Minch, J.A., eds., Geology and mineral wealth of the California Transverse Ranges: South Coast Geological Society Guidebook no. 10 (Mason Hill volume), p. 148-169.

Hillenbrand, J.M., 1990, The Potato Sandstone between the Santa Ana River and Badger Canyon, San Bernardino County, southern California: implications for displacement in the San Andreas fault zone: Riverside, California, University of California, unpublished M.S. thesis, 163 p.

Matti, J.C., Morton, D.M. and Cox, B.F., 1985, Distribution and geologic relations of fault systems in the vicinity of the central Transverse Ranges, southern California: U.S. Geological Survey Open-File Report 85-365, 27 p., scale 1:250,000.

Matti, J.C., Morton, D.M. and Cox, B.F., 1992, The San Andreas fault system in the vicinity of the central Transverse Ranges province, southern California: U.S. Geological Survey Open-File Report 92-354, 40 p., scale 1:250,000.

Meisling, K.E., and Weldon, R.J., 1989, Late Cenozoic tectonics of the northwestern San Bernardino Mountains, southern California: Geological Society of America Bulletin, v. 101, p. 106-128.

Miller, F.K., 1979, Geologic map of the San Bernardino North 7.5' quadrangle: U.S. Geological Survey Open-File Report 79-770, scale 1:24,000.

Morton, D.M., and Miller, F.K., 1975, Geology of the San Andreas fault zone north of San Bernardino between Cajon Canyon and Santa Ana Wash, in Crowell, J.C., ed., San Andreas fault in southern California: California Division of Mines and Geology Special Report 118, p. 136-146.

Weldon, R.J., and Meisling, K.E., 1982, Late Cenozoic tectonics in the western San Bernardino Mountains; Implications for the uplift and offset of the central Transverse Ranges: Geological Society of America Abstracts with Programs, v. 14, no. 4, p. 243-244.

Weldon, R.J., 1986, The late Cenozoic geology of Cajon Pass; implications for tectonics and sedimentation along the San Andreas fault: Pasadena, California Institute of Technology, unpublished Ph.D. thesis, 382 p.


San Bernardino South 7.5' Quadrangle

Morton, D.M., 1978, Geologic map of the San Bernardino South Quadrangle, San Bernardino and Riverside counties, California: U.S. Geological Survey Open-File Report 78-20. http://pubs.er.usgs.gov/usgspubs/ofr/ofr7820.


Telegraph Peak 7.5' Quadrangle

Digital geologic map data

Morton, D.M, Woodburne, M.O., and Foster, J.F., 2001, Digital geologic map of the Telegraph Peak 7.5' quadrangle, San Bernardino County, California: U.S. Geological Survey Open-File Report OF 01-293, scale 1:24,000 http://geopubs.wr.usgs.gov/open-file/of01-293/


Published geologic maps and reports

Dibblee, T.W., Jr., 1982, Regional geology of the Transverse Ranges Province of southern California, in Fife, D.L., and Minch, J.A., eds., Geology and mineral wealth of the California Transverse Ranges: Santa Ana, Calif., South Coast Geological Society Annual Symposium and Guidebook, no. 10, p. 7-26.

Dibblee, T.W., Jr., 1982, Geology of the San Gabriel Mountains, southern California, in Fife, D.L., and Minch, J.A., eds., Geology and mineral wealth of the California Transverse Ranges: South Coast Geological Society Guidebook no. 10 (Mason Hill volume), p. 131-147.

Evans, J.G., 1982, Mineral resources of the Sheep Mountain Wilderness Study Area and the Cucamonga Wilderness and additions, Los Angeles and San Bernardino Counties, California: U.S. Geological Survey Bulletin 1506, 92 p.

Foster, J.H., 1980, Late Cenozoic tectonic evolution of Cajon Valley, southern California: Riverside, University of California, unpublished Ph.D. dissertation, 241 p.

Matti, J.C., Morton, D.M. and Cox, B.F., 1985, Distribution and geologic relations of fault systems in the vicinity of the central Transverse Ranges, southern California: U.S. Geological Survey Open-File Report 85-365, 27 p., scale 1:250,000.

Matti, J.C., Morton, D.M. and Cox, B.F., 1992, The San Andreas fault system in the vicinity of the central Transverse Ranges province, southern California: U.S. Geological Survey Open-File Report 92-354, 40 p., scale 1:250,000.

May, D.J., 1989, Late Cretaceous intra-arc thrusting in southern California: Tectonics, v. 8, p. 1159-1173.

May, D.J., and Walker, N.W., 1989, Late Cretaceous juxtaposition of metamorphic terranes in the southeastern San Gabriel Mountains, California: Geological Society of America Bulletin, v. 101, p. 1246-1267.

Meisling, K.E., and Weldon, R.J., 1989, Late Cenozoic tectonics of the northwestern San Bernardino Mountains, southern California: Geological Society of America Bulletin, v. 101, p. 106-128.

Morton, D.M., 1975, Synopsis of the geology of the eastern San Gabriel Mountains, southern California, in Crowell, J.C., ed., San Andreas fault in southern California: California Division of Mines and Geology Special Report 118, p. 170-176.

Morton, D.M., and Matti, J.C., 1987, The Cucamonga fault zone: Geologic setting and Quaternary history, in Morton, D.M., and Yerkes R.F., eds., Recent reverse faulting in the Transverse Ranges, California: U.S. Geological Survey Professional Paper 1339, p. 179-203.

Morton, D.M., and Matti, J.C., 1991, Geologic map of the Cucamonga Peak 7.5' Quadrangle, California: U.S. Geological Survey Open-File Report 90-694, scale 1:24,000.

Morton, D.M., Rodriguez, E.A., Obi, C.M., Simpson, R.W., Jr., and Peters, T.J., 1983, Mineral resource potential map of the Cucamonga Roadless Areas, San Bernardino County, California: U.S. Geological Survey Miscellaneous Field Studies Map MF-1646-A, scale 1:31,680.

Nourse, J.A., 2002, Middle Miocene reconstruction of the central and eastern San Gabriel Mountains, southern California, with implications for evolution of the San Gabriel Fault and Los Angeles basin, in Barth, A., ed., Contributions to crustal evolution of the southwestern United States: Boulder, Colorado, Geological Society of America Special Paper 365, p. 161-185.

Weldon, R.J., 1986, The late Cenozoic geology of Cajon Pass; implications for tectonics and sedimentation along the San Andreas fault: Pasadena, California Institute of Technology, unpublished Ph.D. thesis, 382 p.

Woodburne, M.O., and Golz, D.J., 1972, Stratigraphy of the Punchbowl formation, Cajon Valley, southern California: California University, Publications in Geological Sciences, v. 92, 73 p.


Valyermo 7.5' Quadrangle

Noble, L.F., 1954, Geology of the Valyermo Quadrangle and vicinity, California: U.S. Geological Survey Geologic Quadrangle Map GQ-50, scale 1:24,000.


Yucaipa 7.5' Quadrangle

Digital geologic map data

Matti, J.C., Morton, D.M., Cox, B.F., Carson, S.E., and Yetter, T.J., 2003, Geologic map and digital database of the Yucaipa 7.5' quadrangle, San Bernardino and Riverside Counties, California, Version 1.0: U.S. Geological Survey Open-File Report OF 03-301, scale 1:24,000, 41 p. http://geopubs.wr.usgs.gov/open-file/of03-301/.
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Published geologic maps and reports

Albright, L.B., 1997, Geochronology and vertebrate paleontology of the San Timoteo Badlands, southern California: Riverside, University of California, unpublished Ph.D. thesis, 328 p.

Albright, L.B., 1999, Magnetostratigraphy and biochronology of the San Timoteo Badlands, southern California, with implications for local Pliocene-Pleistocene tectonic and depositional patterns: Geological Society of America Bulletin, v. 111, p. 1265-1293.

Bortugno, E.J., and Spittler, T.E., 1986, Geologic map of the San Bernardino quadrangle: California Division of Mines and Geology, Map No.3A (Geology) of the Regional Geologic Map Series, scale 1:250,000.

Burnham, W.L., 1952, A preliminary report on the Yucaipa Valley crevice: unpublished manuscript, 44 p.

Burnham, W.L., and Dutcher, L.C., 1960, Geology and ground-water hydrology of the Redlands-Beaumont area, California, with special reference to ground-water outflow: United States Department of the Interior Geological Survey-Ground Water Branch, Open-File Report, 352 p. [This important report is very difficult to obtain. A good-quality copy is archived with the San Bernardino Valley Municipal Water District, from whom copies can be obtained].

Demirer, Ali, 1985, The Mill Creek Formation-a strike-slip basin filling in the San Andreas Fault zone, San Bernardino County, California: Riverside, University of California, unpublished M.S. Thesis, 108 p.

Dibblee, T.W., Jr., 1967, Geologic map of the Yucaipa quadrangle, California: U.S. Geologic Survey Open-File Report, scale 1:24,000.

Dibblee, T.W., Jr., 1974, Geologic map of the Redlands 15-minute quadrangle, California: U.S. Geologic Survey Open-File Report 74-1022, scale 1:62,500.

Dutcher, L.C., and Burnham, W.L., 1964, Geology and ground-water hydrology of the Mill Creek area, San Bernardino County, California: U.S. Geological Survey Open-File Report, 226 p. plus figures [revises an earlier report by the authors, released in 1960. The 1964 report is archived with the San Bernardino Valley Municipal Water District, from whom copies can be obtained].

Eckis, R., 1934, South Coastal basin investigation-Geology and ground-water storage capacity of valley fill: California Department of Water Resources Bulletin 45, 273 p.

Frick, C., 1921, Extinct vertebrate faunas of the Badlands of Bautista Creek and San Timoteo Canon, southern California: Berkley, University of California Publications in Geology, v. 12, no. 5, p. 277-424.

Frizzell, V.A., Jr., Mattinson, J.M., and Matti, J.C., 1986, Distinctive Triassic megaporphyritic monzogranite: evidence for only 160 km offset along the San Andreas Fault, southern California: Journal of Geophysical Research, v. 91, no. B14, p. 14080-14088.

Gibson, R.C., 1971, Nonmarine turbidites and the San Andreas Fault, San Bernardino Mountains, California, in Elders, W.A., ed., Geological excursions in southern California: Riverside, University of California Campus Museum Contributions, no. 1, p. 167-181.

Harden, J.W., and Matti, J.C., 1989, Holocene and late Pleistocene slip rates on the San Andreas Fault in Yucaipa, California, using displaced alluvial-fan deposits and soil chronology: Geological Society of America Bulletin, v. 101, p. 1107-1117.

Jones, L.M., 1988, Focal mechanisms and the state of stress on the San Andreas Fault in southern California: Journal of Geophysical Research, v. 93, no. B8, p. 8869-8891.

Kendrick, K.J., Morton, D.M., Wells, S.G., and Simpson, R.W., 2002, Spatial and temporal deformation along the northern San Jacinto fault, southern California; implications for slip rates: Bulletin of the Seismological Society of America, v. 92, no. 7, pp. 2782-2802.

Matti, J.C., and Morton, D.M., 1975, Geologic history of the San Timoteo Badlands, southern California: Geological Society of America Abstracts with Programs, v. 7, no. 3, p. 344.

Matti, J.C., and Morton, D.M., 1993, Paleogeographic evolution of the San Andreas fault in southern California: a reconstruction based on a new cross-fault correlation, in Powell, R.E., Weldon, R.J., and Matti, J.C., eds., The San Andreas Fault system: displacement, palinspastic reconstruction, and geologic evolution: Geological Society of America Memoir 178, p. 107-159.

Matti, J.C., Morton, D.M. and Cox, B.F., 1985, Distribution and geologic relations of fault systems in the vicinity of the central Transverse Ranges, southern California: U.S. Geological Survey Open-File Report 85-365, 27 p., scale 1:250,000.

Matti, J.C., Morton, D.M., Cox, B.F., Carson, S.E., and Yetter, T.J., 1992, Geologic map of the Yucaipa 7.5' quadrangle, California: U.S. Geological Survey Open-File Report 92-446, 14 p., scale 1:24,000.

Matti, J.C., Morton, D.M. and Cox, B.F., 1992, The San Andreas Fault system in the vicinity of the central Transverse Ranges province, southern California: U.S. Geological Survey Open-File Report 92-354, 40 p., scale 1:250,000.

Morton, D.M., and Matti, J.C., 1993, Extension and contraction within an evolving divergent strike-slip fault complex: the San Andreas and San Jacinto fault zones at their convergence in southern California, in Powell, R.E., Weldon, R.J., and Matti, J.C., eds., The San Andreas Fault system: displacement, palinspastic reconstruction, and geologic evolution: Geological Society of America Memoir 178, p. 217-230.

Morton, D.M., Sadler, P.M., and Matti, J.C., 1990, Constant watershed growth and fault offset in the San Timoteo Badlands, southern California: Geological Society of America Abstracts with Programs, v. 22, no. 3, p. 70.

Reynolds, R.E., and Reeder, W.A., 1986, Age and fossil assemblages of San Timoteo Formation, Riverside County, California, in Kooser, M.A. and Reynolds, R.E., editors, Geology around the margins of the eastern San Bernardino Mountains: Redlands, California, Publications of the Inland Geological Society, volume 1, p. 51-56.

Reynolds, R.E., and Reeder, W.A., 1991, The San Timoteo Formation, Riverside County, California: Redlands, California, San Bernardino County Museum Quarterly, v. 39, p. 44-48.

Rogers, T.H., Compiler, 1967, San Bernardino sheet of Geologic map of California: California Division of Mines and Geology, scale 1:250,000.

Sadler, P.M., and Demirer, Ali, 1986, Geology of upper Mill Creek and Santa Ana Canyon, southern San Bernardino Mountains, California, field trip 12 of Ehlig, P.L., compiler, Neotectonics and faulting in southern California: Geological Society of America, Cordilleran Section, 82nd Annual Meeting, Los Angeles, California, 1986, Guidebook and Volume, p. 129-140.

Sadler, P.M., Demirer, Ali,, West, David, and Hillenbrand, J.M., 1993, The Mill Creek Basin, the Potato Sandstone, and fault strands in the San Andreas fault zone south of the San Bernardino Mountains, in Powell, R.E., Weldon, R.J., and Matti, J.C., eds., The San Andreas Fault system: displacement, palinspastic reconstruction, and geologic evolution: Geological Society of America Memoir 178, p. 289-306.

Spotila, J.A., Farley, K.A., Yule, J.D., and Reiners, P.W., 2001, Near-field transpressive deformation along the San Andreas fault zone in southern California, based on exhumation constrained by (U-Th)/He dating: Journal of Geophysical Research, v. 106, no. B12, p. 30,909-30,922.

Vaughan, F.E., 1922, Geology of the San Bernardino Mountains north of San Gorgonio Pass: California University Publications in Geological Sciences, v. 13, p. 319-411.

Weldon, R. J., and Matti, J. C., 1986, Geologic evidence for segmentation of the southern San Andreas Fault: Transactions of the American Geophysical Union, v. 67, p 905-906.

Willingham, R.C., 1971, Basement fault geometries in the San Bernardino Valley and western San Gorgonio Pass area, southern California: Geological Society of America Abstracts with Programs, v. 3, no. 2, p. 217.

Willingham, R.C., 1981, Gravity anomaly patterns and fault interpretations in the San Bernardino Valley and western San Gorgonio Pass area, southern California, in Brown, A.R., and Ruff, R.W., eds., Geology of the San Jacinto Mountains: Santa Ana, California, South Coast Geological Society, Annual Field trip guidebook, no. 9, p. 164-174.

Woodruff, G.A., and Brock, W.Z., 1980, Soil survey of San Bernardino County, southwestern part, California: U.S. Department of Agriculture, Soil Conservation Service, 64 p., scale 1:24,000.


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